Room Temperature Relaxometry of Single Nitrogen Vacancy Centers in Proximity to α-RuCl 3 Nanoflakes.

Autor: Kumar J; Department of Chemical and Biological Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel., Yudilevich D; Department of Chemical and Biological Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel., Smooha A; Department of Chemical and Biological Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel., Zohar I; Department of Chemical and Biological Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel., Pariari AK; Department of Condensed Matter Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel., Stöhr R; 3rd Institute of Physics, IQST and ZAQuant, University of Stuttgart, 70569 Stuttgart, Germany., Denisenko A; 3rd Institute of Physics, IQST and ZAQuant, University of Stuttgart, 70569 Stuttgart, Germany., Hücker M; Department of Condensed Matter Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel., Finkler A; Department of Chemical and Biological Physics, Weizmann Institute of Science, 7610001 Rehovot, Israel.
Jazyk: angličtina
Zdroj: Nano letters [Nano Lett] 2024 Apr 08. Date of Electronic Publication: 2024 Apr 08.
DOI: 10.1021/acs.nanolett.3c05090
Abstrakt: Nitrogen vacancy (NV) center-based magnetometry has been proven to be a versatile sensor for various classes of magnetic materials in broad temperature and frequency ranges. Here, we use the longitudinal relaxation time T 1 of single NV centers to investigate the spin dynamics of nanometer-thin flakes of α-RuCl 3 at room temperature. We observe a significant reduction in the T 1 in the presence of α-RuCl 3 in the proximity of NVs, which we attribute to paramagnetic spin noise confined in the 2D hexagonal planes. Furthermore, the T 1 time exhibits a monotonic increase with an applied magnetic field. We associate this trend with the alteration of the spin and charge noise in α-RuCl 3 under an external magnetic field. These findings suggest that the influence of the spin dynamics of α-RuCl 3 on the T 1 of the NV center can be used to gain information about the material itself and the technique to be used on other 2D materials.
Databáze: MEDLINE
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